DermUV
UV Protection for Beach day
Sand reflects ~15% of UV and water adds another ~10–25%, so effective UV at the beach can be 25–40% higher than the forecast number.
Recommended gear
For beach day, DermUV recommends SPF 50+ and a reapply interval around 80 minutes, adjusted for sweat, water, and reflection.
Checklist
Broad-spectrum SPF 50+ (water resistant 80 min) UPF 50 rash guard or long-sleeve swim shirt Wide-brim hat (3+ inch brim) UV-blocking sunglasses (UV400) Beach umbrella with UPF 50+ canopy
More activity guides
Compare this activity with other outdoor UV situations.